51609092288820 has 96 divisors (see below), whose sum is σ = 157697617706496. Its totient is φ = 12506906256000.

The previous prime is 51609092288777. The next prime is 51609092288821. The reversal of 51609092288820 is 2888229090615.

It is a Harshad number since it is a multiple of its sum of digits (60).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51609092288821) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 11832054 + ... + 15595373.

It is an arithmetic number, because the mean of its divisors is an integer number (1642683517776).

Almost surely, 2^{51609092288820} is an apocalyptic number.

It is an amenable number.

51609092288820 is an abundant number, since it is smaller than the sum of its proper divisors (106088525417676).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51609092288820 is a wasteful number, since it uses less digits than its factorization.

51609092288820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27430301 (or 27430299 counting only the distinct ones).

The product of its (nonzero) digits is 9953280, while the sum is 60.

The spelling of 51609092288820 in words is "fifty-one trillion, six hundred nine billion, ninety-two million, two hundred eighty-eight thousand, eight hundred twenty".